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Geologic Unit: Oconee
Map showing publication footprint
  • Usage in publication:
    • Oconee Coal Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Coal
  • AAPG geologic province:
    • Illinois basin
Publication:

Nance, R.B., and Treworgy, C.G., 1981, Strippable coal resources of Illinois; Part 8, Central and southeastern Counties: Illinois Geological Survey Circular, no. 515, 32 p.


Summary:

The Oconee Coal Member of the Mattoon Formation of the McLeansboro Group is here named in Shelby, Cumberland, Effingham, and Jasper Counties, IL. It lies 25 to 40 ft above the Loudon Coal Member and 60 to 110 ft below the Shelbyville Coal Member of the Mattoon Formation. Thickness is 1 ft at type section. Age is Late Pennsylvanian (Missourian).

Source: GNU records (USGS DDS-6; Reston GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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